From 42699c5640c38c1597575c6800fe9a940c779202 Mon Sep 17 00:00:00 2001
From: Ben Perove <benperove@gmail.com>
Date: Sun, 17 Jul 2016 11:48:16 -0500
Subject: [PATCH 1/4] added callback_id

---
 src/Attachment.php | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/src/Attachment.php b/src/Attachment.php
index 3ff4424..d0c3960 100644
--- a/src/Attachment.php
+++ b/src/Attachment.php
@@ -13,6 +13,13 @@ class Attachment
      */
     protected $fallback;
 
+    /**
+     * The callback_id for the button group.
+     *
+     * @var string
+     */
+    protected $callback_id;
+
     /**
      * Optional text that should appear within the attachment.
      *
@@ -139,6 +146,10 @@ public function __construct(array $attributes)
             $this->setFallback($attributes['fallback']);
         }
 
+        if (isset($attributes['callback_id'])) {
+            $this->setCallback($attributes['callback_id']);
+        }
+
         if (isset($attributes['text'])) {
             $this->setText($attributes['text']);
         }
@@ -227,6 +238,29 @@ public function setFallback($fallback)
         return $this;
     }
 
+    /**
+     * Get the callback_id text.
+     *
+     * @return string
+     */
+    public function getCallback()
+    {
+        return $this->callback_id;
+    }
+
+    /**
+     * Set the callback_id.
+     *
+     * @param string $callback_id
+     * @return $this
+     */
+    public function setCallback($callback_id)
+    {
+        $this->callback_id = $callback_id;
+
+        return $this;
+    }
+
     /**
      * Get the optional text to appear within the attachment.
      *
@@ -680,6 +714,7 @@ public function toArray()
     {
         $data = [
             'fallback' => $this->getFallback(),
+            'callback_id' => $this->getCallback(),
             'text' => $this->getText(),
             'pretext' => $this->getPretext(),
             'color' => $this->getColor(),

From 106cc911747f262243fb5561844adb24bf6ebd76 Mon Sep 17 00:00:00 2001
From: Ben Perove <benperove@gmail.com>
Date: Sun, 17 Jul 2016 11:48:46 -0500
Subject: [PATCH 2/4] allow confirm array to be optional

---
 src/AttachmentAction.php | 32 ++++++++++++++++++++++++--------
 1 file changed, 24 insertions(+), 8 deletions(-)

diff --git a/src/AttachmentAction.php b/src/AttachmentAction.php
index fe38073..407efe8 100644
--- a/src/AttachmentAction.php
+++ b/src/AttachmentAction.php
@@ -203,6 +203,9 @@ public function setConfirm($confirm)
         } elseif (is_array($confirm)) {
             $this->confirm = new ActionConfirmation($confirm);
 
+            return $this;
+        } elseif (!isset($confirm)) {
+            $this->confirm = null;
             return $this;
         }
 
@@ -216,13 +219,26 @@ public function setConfirm($confirm)
      */
     public function toArray()
     {
-        return [
-            'name' => $this->getName(),
-            'text' => $this->getText(),
-            'style' => $this->getStyle(),
-            'type' => $this->getType(),
-            'value' => $this->getValue(),
-            'confirm' => $this->getConfirm()->toArray(),
-        ];
+        if ($this->getConfirm() != null)
+        {
+            return [
+                'name' => $this->getName(),
+                'text' => $this->getText(),
+                'style' => $this->getStyle(),
+                'type' => $this->getType(),
+                'value' => $this->getValue(),
+                'confirm' => $this->getConfirm()->toArray(),
+            ];
+        }
+        else
+        {
+            return [
+                'name' => $this->getName(),
+                'text' => $this->getText(),
+                'style' => $this->getStyle(),
+                'type' => $this->getType(),
+                'value' => $this->getValue(),
+            ];
+        }
     }
 }

From b28c9ad7228353ef05535d17cd5c54b5564d4bf4 Mon Sep 17 00:00:00 2001
From: Benjamin <benperove@gmail.com>
Date: Sun, 17 Jul 2016 12:40:25 -0500
Subject: [PATCH 3/4] Update AttachmentAction.php

---
 src/AttachmentAction.php | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/src/AttachmentAction.php b/src/AttachmentAction.php
index 407efe8..6ba7b46 100644
--- a/src/AttachmentAction.php
+++ b/src/AttachmentAction.php
@@ -204,7 +204,7 @@ public function setConfirm($confirm)
             $this->confirm = new ActionConfirmation($confirm);
 
             return $this;
-        } elseif (!isset($confirm)) {
+        } elseif (! isset($confirm)) {
             $this->confirm = null;
             return $this;
         }
@@ -219,8 +219,7 @@ public function setConfirm($confirm)
      */
     public function toArray()
     {
-        if ($this->getConfirm() != null)
-        {
+        if ($this->getConfirm() != null) {
             return [
                 'name' => $this->getName(),
                 'text' => $this->getText(),
@@ -229,9 +228,7 @@ public function toArray()
                 'value' => $this->getValue(),
                 'confirm' => $this->getConfirm()->toArray(),
             ];
-        }
-        else
-        {
+        } else {
             return [
                 'name' => $this->getName(),
                 'text' => $this->getText(),

From 3c414fc7a11b01f50c20b9d1949b445d0b807cd2 Mon Sep 17 00:00:00 2001
From: Benjamin <benperove@gmail.com>
Date: Sun, 17 Jul 2016 12:43:58 -0500
Subject: [PATCH 4/4] Update AttachmentAction.php

---
 src/AttachmentAction.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/AttachmentAction.php b/src/AttachmentAction.php
index 6ba7b46..77aa647 100644
--- a/src/AttachmentAction.php
+++ b/src/AttachmentAction.php
@@ -206,6 +206,7 @@ public function setConfirm($confirm)
             return $this;
         } elseif (! isset($confirm)) {
             $this->confirm = null;
+
             return $this;
         }